I agree with the poster above who recommended Anthem's ARC Genesis room correction, except the easiest and least costly way to obtain that is to purchase one or more of Martin Logan's subwoofers. ARC is incredibly effective and it is much easier to set up than Dirac Live (I have both and I prefer the results from Anthem over that of Dirac, so far). I have two Martin Logan Dynamo 1100X subs and I can confirm that they reach reliably to 22Hz (I checked with a tone generator and SPL meter) and they deliver very satisfying deep bass.
More Bass
I recently purchase a pair of Legacy Signature speakers from an on-line retailer. I purchased them unheard, but I did my due diligence in researching them and I would have thought with the 7" woofers and a rated frequency response of 22-30K hz, there would have been a bit more bass (although there is a couple of tunes I have played where there is some bass that is really deep and sounds all garbled, very weird, but I just won’t listen to those songs,I guess).
I bought floor standers so I wouldn’t have to deal with the hassle that goes along with setting up subwoofers, also with all the space they take up and the negative WAF that goes along with them.
They are a little bright on the top end, but I’ll blame that on my room, it probably needs more treating, just limited on funds at the moment.
If I thought I needed subwoofers, I'm thinking I might have bought a pair of Fritz bookshelfs and a pair of subs, for probably less than the Sigs.
The price of Legacy subs is over the top for me, so do you think there is any way to get more bass without subs or are there any subs that are a bit smaller, that might do the trick as I am pretty limited on space (and funds as previously mentioned!) Thanks